TC74HC4538AP/AF/AFT
2016-12-02
7
Electrical Characteristics
DC Characteristics
Characteristics Symbol
Test Condition Ta = 25°C
Ta =
40 to 85°C
Unit
V
CC
(V)
Min Typ. Max Min Max
High-level input
voltage
V
IH
2.0
4.5
6.0
1.50
3.15
4.20
1.50
3.15
4.20
V
Low-level input
voltage
V
IL
2.0
4.5
6.0
0.50
1.35
1.80
0.50
1.35
1.80
V
High-level output
voltage
(Q,
Q
)
V
OH
V
IN
= V
IH
or V
IL
I
OH
= -20 μA
2.0
4.5
6.0
1.9
4.4
5.9
2.0
4.5
6.0
1.9
4.4
5.9
V
I
OH
= -4 mA
I
OH
= -5.2 mA
4.5
6.0
4.18
5.68
4.31
5.80
4.13
5.63
Low-level output
voltage
(Q,
Q
)
V
OL
V
IN
= V
IH
or V
IL
I
OL
= 20 μA
2.0
4.5
6.0
0.0
0.0
0.0
0.1
0.1
0.1
0.1
0.1
0.1
V
I
OL
= 4 mA
I
OL
= 5.2 mA
4.5
6.0
0.17
0.18
0.26
0.26
0.33
0.33
Input leakage
current
I
IN
V
IN
= V
CC
or GND 6.0 ±0.1 ±1.0 μA
T2 terminal input
leakage current
I
IN
V
IN
= V
CC
or GND 6.0 ±0.5 ±5.0 μA
Quiescent supply
current
I
CC
V
IN
= V
CC
or GND 6.0 4.0 40.0 μA
Active-state supply
current
(Note 1)
I
CC
V
IN
= V
CC
or GND
R
X
/C
X
= 0.5 V
CC
2.0
4.5
6.0
40
200
300
120
300
600
160
400
800
μA
Note 1: Per circuit
TC74HC4538AP/AF/AFT
2016-12-02
8
Timing Requirements
(input: t
r
= t
f
= 6 ns)
Characteristics Symbol
Test Condition Ta = 25°C
Ta =
-40 to
85°C
Unit
V
CC
(V) Typ. Max Max
Minimum pulse width
(A,
B
)
t
w (L)
t
w (H)
2.0
4.5
6.0
75
15
13
95
19
16
ns
Minimum clear width
(
CD
)
t
w (L)
2.0
4.5
6.0
75
15
13
95
19
16
ns
Minimum clear removal time t
rem
2.0
4.5
6.0
15
5
5
15
5
5
ns
Minimum retrigger time t
rr
R
X
= 1 kΩ
C
X
= 100 pF
2.0
4.5
6.0
380
92
72
ns
R
X
= 1 kΩ
C
X
= 0.01 μF
2.0
4.5
6.0
6.0
1.4
1.2
μs
AC Characteristics
(C
L
= 15 pF, V
CC
= 5 V, Ta = 25°C, input: t
r
= t
f
= 6 ns)
Characteristics Symbol Test Condition Min Typ. Max Unit
Output transition time
t
TLH
t
THL
6 12 ns
Propagation delay time
(A,
B
-Q,
Q
)
t
pLH
t
pHL
25 44 ns
Propagation delay time
(
CD
-Q,
Q
)
t
pLH
t
pHL
21 34 ns
TC74HC4538AP/AF/AFT
2016-12-02
9
AC Characteristics
(C
L
= 50 pF, input: t
r
= t
f
= 6 ns)
Characteristics Symbol
Test Condition Ta = 25°C
Ta =
-40 to 85°C
Unit
V
CC
(V)
Min Typ. Max Min Max
Output transition time
t
TLH
t
THL
2.0
4.5
6.0
30
8
7
75
15
13
95
19
16
ns
Propagation delay
time
(A,
B
-Q,
Q
)
t
pLH
t
pHL
2.0
4.5
6.0
120
30
25
250
50
43
315
63
54
ns
Propagation delay
time
(
CD
-Q,
Q
)
t
pLH
t
pHL
2.0
4.5
6.0
100
25
20
195
39
33
245
49
42
ns
Output pulse width t
wOUT
C
X
= 0 F
R
X
= 5 kΩ (V
CC
= 2 V)
R
X
= 1 kΩ (V
CC
= 4.5 V, 6 V)
2.0
4.5
6.0
540
180
150
1200
250
200
1500
320
260
ns
C
X
= 0.01 μF
R
X
= 10 kΩ
2.0
4.5
6.0
70
69
69
83
77
77
96
85
85
70
69
69
96
85
85
μs
C
X
= 0.1 μF
R
X
= 10 kΩ
2.0
4.5
6.0
0.67
0.67
0.67
0.75
0.73
0.73
0.83
0.77
0.77
0.67
0.67
0.67
0.83
0.77
0.77
ms
Output pulse width
error between circuits
(in same package)
Δt
wOUT
±1 %
Input capacitance C
IN
5 10 10 pF
Power dissipation
capacitance
C
PD
(Note 1)
70 pF
Note 1: C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
I
CC (opr)
= C
PD
·V
CC
·f
IN
+ I
CC
·Duty/100 + I
CC
/2 (per circuit)
(I
CC’
: active supply current)
(Duty: %)

TC74HC4538AF-ELF

Mfr. #:
Manufacturer:
Toshiba
Description:
Monostable Multivibrator CMOS Logic IC 25ns 4mA 2.0 to 6.0V
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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